52MM 2X Professional Telephoto Lens with High Definition 52MM Wide Angle Lens + Adapter 52mm for GoPro Hero 3+ Hero4 Black Silver White Camcorder

52mm Adapter Ring. Allows you to mount any type of filter or lens converters with a 52mm thread, such as: Linear Polarizer Filters, Circular Polarizer Filters, Neutral Density Filters, Graduated Neutral, Density Filters, UV Filters, etc "please...